A comparison of knowledge-based and statistically-based techniques for reference retrieval

Stephen Wade, Peter Willett, Bruce Robinson, Brian Vickery, Alina Vickery

Research output: Contribution to journalReview article

1 Citation (Scopus)

Abstract

This paper reports on a comparative evaluation of two computerised reference retrieval systems, INSTRUCT and PLEXUS. Instruct is a statistically-based system based on best match searching and automatic index term weighting while Plexus uses expert systems techniques to improve access to a conventional Boolean search system. After an introduction to the retrieval techniques used by the two systems, their retrieval effectiveness is compared using a set of nineteen queries and 512 documents on the subject of gardening. The best results were obtained by using the terms suggested by the Plexus system as the basis for an Instruct search.

Original languageEnglish
Pages (from-to)91-108
Number of pages18
JournalOnline Information Review
Volume12
Issue number2
DOIs
Publication statusPublished - 1 Feb 1988
Externally publishedYes

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